Can users post their donations to facebook? (fundraiser plugin)

Hi,
I'm building a fundraising site for my non-profit organization and I would like to have the donations posted on to facebook.
I want people to have a button on the last page of their donation process that suggests they post their donations to facebook (something automatic that will have the sites name, the fundraiser name and some description about the donation).
Is there a way to do that?

Thanks in advanced.